docstr: Sleep a random amount of time between wait_random_min and wait_random_max
docstr_tok: ["Sleep","a","random","amount","of","time","between","wait_random_min","and","wait_random_max"]
code: def random_sleep(
      self, previous_attempt_number, delay_since_first_attempt_ms
  ):
      """Sleep a random amount of time between wait_random_min and wait_random_max"""
      return random.randint(
          self._wait_random_min, self._wait_random_max
      )
  
imports: import random
  import six
  import sys
  import time
  import traceback
label_desc: Use image node_id 6 for calling the Retrying obj's underlying member method code with example usage: obj.random_sleep(previous_attempt_number, delay_since_first_attempt_ms) and returns: random